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Product Specs:
Memory Trade in
Save money by trading in your original chips! View available memory rebates.
From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
iMac Intel
iMac (27-inch Mid 2011)
(May, 2011)
Model ID: iMac12,2
2.7GHz i5, 3.1GHz i5, 3.4GHz i7
iMac Intel
iMac (27-inch Mid 2010)
(July, 2010)
Model ID: iMac11,3
2.8GHz, 2.93GHz, 3.2GHz, 3.6GHz
iMac Intel
iMac (21.5-inch Late 2011)
(August, 2011)
Model ID: iMac12,1
3.1GHz i3
iMac Intel
iMac (21.5-inch Mid 2011)
(May, 2011)
Model ID: iMac12,1
2.5GHz i5, 2.7GHz i5, 2.8GHz i7
iMac Intel
iMac (21.5-inch Mid 2010)
(July, 2010)
Model ID: iMac11,2
3.06GHz, 3.2GHz, 3.6GHz
Mac mini Intel
Mac mini (Mid 2011)
(July, 2011)
Model ID: Macmini5,1 & Macmini5,2
2.3GHz, 2.5GHz, 2.7GHz
Mac mini Intel
Mac mini (Mid 2011 Server)
(July, 2011)
Model ID: Macmini5,3
2.0GHz
MacBook Pro Unibody
MacBook Pro (17-inch 2011)
(October, 2011)
Model ID: MacBookPro8,3
2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (17-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,3
2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (15-inch 2011)
(October, 2011)
Model ID: MacBookPro8,2
2.2GHz, 2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (15-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,2
2.0GHz, 2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (13-inch 2011)
(October, 2011)
Model ID: MacBookPro8,1
2.4GHz, 2.8GHz
MacBook Pro Unibody
MacBook Pro (13-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,1
2.3GHz, 2.7GHz
PC Laptop
PC Laptops
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 4.9 / 5 73 out of 77 (95%) reviewers would recommend this product
1 2 3 4
Verified Buyer
Reviewer: PatrickR Location: Los Angeles, CA Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 High quality RAM November 30, 2016 OWC is the best. High quality RAM, not only at very competitive prices but also supplies excellent customer service and installation guides and videos.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: nkpltrr Location: Denton TX Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 memory upgrade kit November 28, 2016 The memory was easy to install and worked perfectly. I have never had any problems with OWC memory.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Superpleased Location: Wellington, New Zealand Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 First class service, top quality product November 17, 2016 Advice provided by MacSales on the right product for the version and generation of iMac was accurate and absolutely reliable. The product was shipped promptly and when fitted worked immediately, and perfectly. Shoppers can be confident about the trustworthiness of the site, the information it provides - a challenge given the need for iMacs to be fitted with memory modules of specific qualities and precise requirements - and timeliness of delivery together with packaging security and protection.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: Boulder, CO Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 just works July 19, 2016 I bought this 2*4GB memory to upgrade a mid-2010 iMac from 4GB to 8GB. Works perfectly.

I had previously tried to upgrade this machine from 2*2GB to 4*2GB. After adding 2*2GB to the front two memory slots, the machine began experiencing memory panic. OWC provided me a copy of the "Rember" memory tester, which revealed no problem in any of the 4*2GB DIMMs. I finally concluded that Apple had delivered the machine with a defect in the electronics serving the front two memory slots, so I got rid of all 2GB DIMMs and replaced them with 2*4GB in the back two memory slots. Problem solved! Thank you, OWC, for providing the memory test program.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous
Rating: 5/5 Good product right in time! January 31, 2016 I would recommend this item to a friend!
Verified Buyer
Reviewer: Anonymous Location: Hawaii Age: Over 65 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Upgrade January 11, 2016 I have an iMac i3 which came with 4G RAM and the product purchased was exactly what was needed to increase RAM and also increase response time. Fast service and delivery. I now have 16G RAM the maximum amount required of this model PC. The website has all the details needed to make the correct choice for this purchase of memory cards.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Hobe Sound FL Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Great Prices November 26, 2015 I purchased a 8gb memory upgrade and was very happy with the fast delivery, but even more happy with the instruction video "how to install memory on an iMac" great

I would recommend this item to a friend!

Reviewer: Anonymous Location: Omaha, NE Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Price + Performance October 11, 2015 Great Price and great performance with free shipping. Arrived early and was installed without a hitch.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Cupertino, CA Experience Level: Home User Owned Product: 3-4 months
Rating: 5/5 So good it's getting boring ;^) September 23, 2015 That's what I like -- products that are so good and competively priced that writing a good review gets downright boring. I can cut and paste all the reviews I've written over the years on the OWC memory I've used on my many Macs. Yawn ;^)

(Did I mention the free shipping?)

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Ely Mn Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great September 6, 2015 I was not sure to order this product or not.. But now glad I did.. A great company and a great product.. And their installation video was great...

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Toronto, Ontario, Canada Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 As good 2nd time around August 31, 2015 Just installed Memory on my MacBook Pro. Worked well, so decided to install additional Memory on my iMac which has been working well. Installation a cinch. iMac working faster.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Canada Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Great product, quick shipping August 16, 2015 As ever, shopping with OWC is a safe experience--good prices, good products, definitely a recommendation.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: New Jersey Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 As Usual July 13, 2015 OWC provides high quality, high performance hardware. Helped my friend rebuild a 2009 iMac which all it needed was more memory to get the newest MacOS

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Melbourne, Australia Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Great product July 11, 2015 Great product, thanks OWC, great service as usual!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: illinois Age: 35-44 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 great product June 18, 2015 these work as they should

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Palatine, IL Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Absolutely Great! June 2, 2015 I ordered this 8GB to "fill up" my iMac, in response to your having replaced (free of charge) an earlier 8 GB that I had ordered a few years ago. Your warranty policy is top-notch as is your service. To top it off, you guys are practically in my back yard (30-40 miles or so). I would expect you guys to be around a long time.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: singapore Age: 35-44 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 my imac is given a new lease of life. May 25, 2015 I bought 2 X 4 hoping to pair with my existing 2 X 2 on imac mid 2010 For 12 gb. Subsequently readied the 2 X 4 on my macbook pro 15 2011 can be used as well. Combined them and I now have 16 gb. Together with the ssd and ssd diy kit cable, my imac 2010 feels like new again. Thank you.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: La Grange, IL
Rating: 5/5 A Solid Mac Upgrade ! May 1, 2015 I purchased this RAM upgrade for my 5 year old i-MAC. I have been quite impressed with the improvements in speed. I haven't seen the spinning beach ball since the upgrade. It doesn't fix all the issues with a Mac of this age but it helps considerably.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Kankakee, IL Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Biggest bang for the buck! April 27, 2015 My first Mac Mini had a measly 1GB of RAM. It was enough to operate and become accustomed to using OSX, but was by no means a speed demon. When I purchased my second Mini, I ordered it with the stock 4GB of RAM. I knew that I could get RAM from any third party supplier at a much cheaper price. I was already paying the "Apple Tax" on the Mini, I didn't want to pay it on the RAM also.

I shopped around online at my few preferred vendors. But what I found when I arrived at OWC through a Google search impressed me. Their website allowed me to drill down my model of Mini to assure that I was buying exactly the right size, type, speed, etc. The installation videos they have available for all of their upgrades reaffirmed that it was an easy process. Their pricing was in line with the other vendors that I normally dealt with; and even provided buy-back for the RAM that the Mini shipped with.

I placed my order, it was shipped the same day and arrived promptly. In five minutes I had performed the replacement. If you're just checking email and browsing the web, you may not notice a big difference. But if you're using Office, Photoshop or Parallels then the bump from 4GB to 8GB will make a huge difference.

You can Google an find several sites that have done performance comparisons. You get the biggest improvement going from 4GB to 8GB, but not much more if you go beyond that. The RAM has now been operating perfectly in my Mini for nearly five years now. I would recommend OWC for RAM, SSD's and just about any other component you need to repair or upgrade your Mac.

I would recommend this item to a friend!

Response from MacSales.com, Marketing April 27, 2015 You don't need to go as far as a Google search to see the extra performance more memory can give. Check out our own in-house testing of memory here: http://eshop.macsales.com/shop/apple/memory/Macbook_Memory_Benchmarks
Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Raleigh, NC Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Excellent product April 26, 2015 Been using this memory for three years, no problems.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Birmingham, AL Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Additional RAM for iMac mid 2011 April 21, 2015 I wanted to expand my 4 GB RAM to 8 GB on each of my two iMacs and this product has worked well. Actually, I took the 2-GB modules from one and added them to one iMac (making 8 GB total (2x4), then I used the new RAM (4x2) to make 8 GB in the other. I have not put this new memory through any special tests but upon restarting the iMacs, they recognized all the memory without a glitch and have been working well since I installed it (units remain powered on) in early 03/2015. I viewed the OWC on-line videos and the installation was easy. I have only purchased additional RAM for my Mac computers over the years from OWC and as best I can remember, I have never had a problem yet.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 works great, as described! April 10, 2015 I would recommend this item to a friend!
Verified Buyer
Reviewer: Anonymous Location: Bakersfield, CA Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 A mystery solved.... March 27, 2015 Recently, I started getting a message on my IMac stating that my "application memory was dangerously low". This prompted me to download an AP called "Memory Clean" and after running Memory Clean realized it was, in fact, almost non-existent. I ordered an 8.0GB (2x4.0GB Kit) from OWC (an Apple recommended company) and installed it, leaving the two original 2.0GB memory cards in the computer. The new memory was immediately accepted, so now I had 12GB of memory instead of 4.0GBs but it wasn't helping. I went to the Apple Store to find out what else I could do. They suggested taking the old memory cards out and replacing them with the new ones in the first slots. I did that but that didn't help either. I decided to order another kit from OWC so I could have the full 16.0GB allowed on my IMac. This seemed to work but then I began getting the message of low application memory again. This time I decided to look at what might be eating up all this memory and discovered that the Seagate backup, I had running on my computer, was hogging the memory. I unplugged the Seagate and immediately got my memory back. I haven't had the "low memory" message appear again. I am writing this review because it took me a while to figure this out and someone else out there may be having the same problem. OWC product is working extremely well and I was very happy with their service. Amazingly, the second kit I ordered was in my hands in a couple of days without having to pay for shipping. Thank you OWC!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 A Lot Of Bang For The Bucks January 10, 2015 Added 8GB to my iMac's 4GB for a total of 12GB - and it makes the iMac fly. Dollar-for-dollar this is the best way to speed up your confuser.

One warning: it takes quite a bit of force to insert each model - much more than you would think. Don't give up.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: N.E. Oregon Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 A seamless fit with my mid-2010 imac November 22, 2014 This was my second attempt to add memory to my older imac (mid 2010). The first attempt was with 16 GB of memory I bought through Best products with assurances that it was the correct item for my imac. It did not work. After avoiding the task, I decided to try again with OWC. I installed 8GB and it went perfectly. Thank you OWC, Jed

I would recommend this item to a friend!

OWC Memory 8.0GB 2 x 4.0GB PC10600 DDR3 Kit Mfr P/N: 1333DDR3S08S MacSales.com SKU: OWC1333DDR3S08S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $63.98MacSales.com Price $59.99
Add to CartOther World Computing 1333DDR3S08S In Stock, Click to Buy Now